Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.


When you use a Transaction Integrator (TI) application that uses SNA LU 6.2 connection to the mainframe, the application may hang and the following error may occur:

HISMSNA0015 The SNATransport encountered an error calling internal method CMALLC when processing method <MethodName>, LUName <LUName>. Details: An internal error occurred during processing of TP Started, error code = 4592.


The error occurs under certain circumstances where a TP_ENDED command is not issued. This results in an increasing number of active TP sessions. When 15,000 active TP sessions is reached, this error will be reported. 


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


This issue is fixed in the following cumulative update for Host Integration Server:


Learn about the terminology that Microsoft uses to describe software updates.

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!